Robinair 34134Z ac recovery unit r-134A cool-tech

This item is very lightly used. Used maybe once or twice at the most.
The Cool-Tech 34134Z recovers, recycles, evacuates, and recharges R-134a refrigerant quickly and accurately. Features include:
* Automatic recovery/recharge by weight
* Programmable vacuum time intervals
The Robinair 34134Z is a Cool-Tech Recovery/Recycle/Recharge Unit for R-134a. The Cool-Tech 34134Z recovers, recycles, evacuates and recharges R-134a refrigerant quickly and accurately. The manual air purge removes air from the internal storage vessel. The gauges on the control panel show when to purge the air. Its oil drain display reminds user to drain the system oil captured during recovery. The graduations on the container clearly show user how much oil needs to be replaced. The oil inject system prompts user to inject oil before charge. O-ring on oil reservoir provides visual reference on graduated container.